CN112095485A - Bridge stay cable anchor cylinder pre-embedded positioning device and using method thereof - Google Patents
Bridge stay cable anchor cylinder pre-embedded positioning device and using method thereof Download PDFInfo
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- CN112095485A CN112095485A CN202011063802.9A CN202011063802A CN112095485A CN 112095485 A CN112095485 A CN 112095485A CN 202011063802 A CN202011063802 A CN 202011063802A CN 112095485 A CN112095485 A CN 112095485A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 111
- 239000010959 steel Substances 0.000 claims abstract description 111
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 18
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 18
- 241001330002 Bambuseae Species 0.000 claims description 18
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 18
- 239000011425 bamboo Substances 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a pre-buried positioning device for an anchor cylinder of a stay cable of a bridge and a use method thereof, which adopt a BIM full three-dimensional design idea, consider the influences of factors such as the dead weight of the anchor cylinder, the structural structure of the anchor cylinder, the longitudinal and transverse gradients of the anchor block of the stay cable and the like, and realize the quick and accurate positioning of the anchor cylinder of the stay cable on a cast-in-situ box girder of the stay cable bridge by arranging temporary structures below and on two sides of an anchor backing plate at the bottom of the anchor cylinder and at a certain position at the front end of the anchor cylinder, thereby solving the problems of inaccurate positioning of the anchor cylinder caused by larger dead weight, longer length, inaccurate positioning of the anchor cylinder welded with a large amount of steel bars on the surface, or inaccurate positioning of the anchor cylinder caused. Belongs to the field of building engineering.
Description
Technical Field
The invention relates to a pre-buried positioning device for a bridge stay cable anchor cylinder and a using method thereof, which are particularly suitable for controlling elevation, left-right deviation and angle directions when the stay cable anchor cylinder is pre-buried before beam concrete pouring of a cable-stayed bridge, and belong to the field of constructional engineering.
Background
At present, as the bridge construction technology in China is more and more mature, the cable-stayed bridge construction technology has been developed rapidly, but in the construction process of pre-embedding and positioning the anchor cylinder of the stay cable before the concrete of a cast-in-place box girder of a main bridge is carried out, the accurate positioning of the pre-embedding of the anchor cylinder is difficult to carry out mainly under the influences of the positions of vertical rods erected by supports, the rigidity of a template, the longitudinal and transverse gradients of a girder body, the gradient of an anchor sealing end, the self weight of the anchor cylinder, temperature and the like, or the problem that the positioning of the anchor cylinder is inaccurate due to the fact that the anchor cylinder is not firmly fixed and is easy to deviate in the construction process or is influenced by the temperature exists.
Disclosure of Invention
The invention provides a pre-buried positioning device for a bridge stay cable anchor cylinder and a using method thereof, which are used for realizing the quick and accurate positioning of the stay cable anchor cylinder on a cast-in-situ box girder of a cable-stayed bridge and solving the problems of inaccurate positioning of the anchor cylinder due to larger self weight, longer length and inaccurate positioning of the anchor cylinder welded with a large number of steel bars on the surface or because the reinforcement is not firm and is easy to deviate in the construction process and influenced by temperature.
For realizing above-mentioned purpose, plan to adopt such pre-buried positioner of bridge suspension cable anchor cylinder, including setting up in the anchor cylinder bottom template of anchor cylinder design position bottom, steel sheet and the laminating of anchor cylinder bottom template mutually at the bottom of the anchor cylinder, downside along steel sheet at the bottom of the anchor cylinder is provided with the 1# angle steel, the 1# angle steel is fixed in on the anchor cylinder bottom template, the bottom of anchor cylinder bottom template is fixed with the 2# angle steel along leading to the length direction, and a plurality of support reinforcement fixed connection through distributing the setting between 1# angle steel and the 2# angle steel, the upper end of anchor cylinder design position still is provided with anchor cylinder support, anchor cylinder support is including being used for setting up the horizon bar of anchor cylinder upper end, the horizon bar is height-adjustable type structure, the horizon bar exposes the box girder structural plane more than 10 cm.
In the positioning device, two sides and the upper side of the anchor cylinder bottom steel plate are respectively provided with a 3# angle steel and a 4# angle steel, and four side surfaces of the anchor cylinder bottom steel plate are respectively fixedly connected with the anchor cylinder bottom template through the 1# angle steel, the 3# angle steel and the 4# angle steel;
among the aforementioned positioner, anchor section of thick bamboo support still includes two pole settings and an down tube, and two pole settings set up respectively in the both ends of horizon bar, and the both ends of horizon bar are passed through fastener and the pole setting fixed connection at both ends, and the down tube slant sets up and the upper end is fixed in the middle part of horizon bar.
The specific construction method comprises the following steps:
(1) measuring line
According to the embedded precision requirement of the anchor cylinder, a total station three-dimensional coordinate method is adopted to discharge the central line and the central point of the lower anchor point of the stay cable on a bottom template of the anchor cylinder, the peripheral lines of the bottom steel plate of the anchor cylinder are separated and marked according to the measuring central point, and the central point position of the anchor cylinder is measured on the thin steel plate welded at the pipe orifice at the top end of the anchor cylinder;
(2) device mounting and positioning
1) Installing angle steel at the bottom of the anchor cylinder:
firstly, attaching No. 1 angle steel to the bottom side line of the bottom steel plate of the anchor cylinder, and pre-fixing the angle steel;
secondly, the 2# angle steel is tightly attached to the bottom of the bottom template of the anchor cylinder and is arranged in a through manner;
arranging a supporting steel bar between the No. 1 angle steel and the No. 2 angle steel, and firmly welding two ends of the supporting steel bar with the No. 1 angle steel and the No. 2 angle steel respectively;
2) erecting an anchor cylinder support:
firstly, an anchor cylinder bracket is erected by adopting a common steel pipe and consists of two vertical rods, a horizontal rod and an inclined rod, and the rods are connected by adopting a fastener;
secondly, the positions of the vertical rods are determined according to actual conditions on site, two vertical rods are firstly erected, then the horizontal rods are erected, and finally the inclined rods are erected, wherein the horizontal rods are required to be exposed out of the top surface of the box girder structure by more than 10 cm;
(3) hoisting and positioning and reinforcing of anchor cylinder
1) Anchor cylinder hoisting in place
Hoisting the bottom of an anchor cylinder to the upper side of the No. 1 angle steel by using hoisting equipment, and placing the upper part of the anchor cylinder on a horizontal rod;
secondly, primarily adjusting the inclination angle of the anchor cylinder to a designed position by utilizing the vertical height of the horizontal rod;
2) bottom reinforcement of anchor cylinder
After the anchor cylinder is hoisted in place, 3# angle steel is installed to reinforce two sides of the anchor cylinder bottom steel plate, and if a gap exists between the anchor cylinder bottom steel plate and the anchor cylinder bottom template, the 3# angle steel is arranged in a full-length mode and additionally provided with 4# angle steel;
(4) anchor cylinder angle fine adjustment
After the bottom of the anchor cylinder is firmly reinforced, the angle of the anchor cylinder is adjusted by adjusting the vertical height of the horizontal rod again, angle fine adjustment is carried out according to on-site measuring and setting data, and after the angle is adjusted in place, the horizontal rod is fixed on the vertical rod at the elevation position by using the fastener.
Compared with the prior art, the embedded positioning device is quite simple in structure, materials and equipment such as angle steel, steel bars, steel pipes, cranes, tower cranes and the like are generally arranged on a construction site, the embedded positioning device can be quickly processed by using the materials and tools on the construction site, the manufacturing cost is low, the site implementation performance is high, the construction safety is high, the positioning device and the method can be used for quickly and accurately positioning the anchor cylinder, the positioning precision is high, the embedded positioning device is not easily influenced by construction environments and conditions, the embedded positioning device is not easy to deviate, the embedded positioning device has good practicability and popularization in similar bridge embedded part positioning construction, and the embedded positioning device is practically applied to a plurality of projects, and has an obvious effect.
Drawings
FIG. 1 is a schematic structural view of the present invention after installation of an anchor barrel;
FIG. 2 is a schematic view of the positioning structure of the bottom of the anchor barrel;
fig. 3 is a schematic structural diagram of the anchor cylinder bottom steel plate mounted on the anchor cylinder bottom formwork.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
Examples
Referring to fig. 1 to 3, this embodiment provides a pre-buried positioner of bridge suspension cable anchor cylinder, including setting up in anchor cylinder bottom template 1 of anchor cylinder 2 design position bottom, steel sheet 3 and the laminating of anchor cylinder bottom template 1 mutually at the bottom of the anchor cylinder, the downside that follows steel sheet 3 at the bottom of the anchor cylinder is provided with # angle steel 4, # angle steel 4 is fixed in on the anchor cylinder bottom template 1, the bottom of anchor cylinder bottom template 1 is fixed with # angle steel 5 along the length direction, and 6 fixed connection of a plurality of support bars through distributing the setting between # angle steel 4 and the # angle steel 5, the both sides and the upside of steel sheet 3 set up # angle steel 8 and # angle steel 9 respectively at the bottom of the anchor cylinder, four sides of steel sheet 3 at the bottom of the anchor cylinder are respectively through # angle steel 4, 3# angle steel 8 and # angle steel 9 and anchor cylinder bottom template 1 fixed connection.
The upper end of anchor section of thick bamboo 2 design position still is provided with anchor section of thick bamboo support 7, anchor section of thick bamboo support 7 is including the horizon bar 71 that is used for setting up anchor section of thick bamboo 2 upper end, still include two pole settings 72 and an down tube 73, horizon bar 71 is the height-adjustable structure, horizon bar 71 exposes more than 10cm of case roof beam structural plane, two pole settings 72 set up respectively in the both ends of horizon bar 71, the both ends of horizon bar 71 are passed through fastener and the pole setting 72 fixed connection at both ends, so that adjust the fixed high position of tree liver 71 on pole setting 72, the slant of down tube 73 sets up and the upper end is fixed in the middle part of horizon bar 71.
The specific construction method comprises the following steps:
(1) measuring line
According to the pre-buried precision requirement of the anchor cylinder 2, a total station three-dimensional coordinate method is adopted to discharge the central line and the central point of the anchor point under the stay cable on the anchor cylinder bottom template 1, the peripheral lines of the anchor cylinder bottom steel plate 3 are divided and marked according to the measuring central point, and the central point position of the anchor cylinder 2 is measured on the thin steel plate welded at the top end pipe orifice of the anchor cylinder 2;
(2) device mounting and positioning
1) Installing angle steel at the bottom of the anchor cylinder:
firstly, attaching No. 1 angle steel 4 to the bottom side line of a bottom steel plate 3 of an anchor cylinder, and pre-fixing the angle steel by using steel nails;
secondly, the 2# angle steel 5 is tightly attached to the bottom of the anchor cylinder bottom template 1 and is arranged in a through manner;
③ 2 pieces of angle steel are vertically arranged between the 1# angle steel 4 and the 2# angle steel 5
The support steel bar 6 is at 20@30cm, and two ends of the support steel bar 6 are respectively and firmly welded with the No. 1 angle steel 4 and the No. 2 angle steel 5;
2) erecting an anchor cylinder support:
firstly, an anchor cylinder bracket is erected by adopting a common steel pipe and consists of two upright rods 72, a horizontal rod 71 and an inclined rod 73, and the rods are connected by adopting a fastener;
secondly, the positions of the upright posts 72 are determined according to actual field conditions, two upright posts 72 are firstly erected, then the horizontal rods 71 are erected, and finally the inclined rods 73 are erected, wherein the horizontal rods 71 are required to be exposed out of the top surface of the box girder structure by more than 10 cm;
(3) hoisting and positioning and reinforcing of anchor cylinder
1) Anchor cylinder hoisting in place
Firstly, hoisting the bottom of an anchor cylinder 2 to the upper side of a No. 1 angle iron 4 by using hoisting equipment, and placing the upper part of the anchor cylinder on a horizontal rod 71;
secondly, primarily adjusting the inclination angle of the anchor cylinder 2 to a designed position by utilizing the vertical height of the horizontal rod 71;
2) bottom reinforcement of anchor cylinder
After the anchor cylinder 2 is hoisted in place, 3# angle steel 8 is installed to reinforce two sides of the anchor cylinder bottom steel plate 3, the length of the anchor cylinder bottom steel plate is 30cm, and if a gap exists between the anchor cylinder bottom steel plate 3 and the anchor cylinder bottom formwork 1, 4# angle steel 9 is arranged and additionally arranged on the 3# angle steel 8 in a full-length mode.
(4) Anchor cylinder angle fine adjustment
After the bottom of the anchor cylinder 2 is firmly reinforced, the angle of the anchor cylinder is adjusted by adjusting the vertical height of the horizontal rod 71 again, fine angle adjustment is carried out according to on-site measuring and setting data, and after the angle is adjusted in place, the horizontal rod 71 is fixed on the vertical rod 72 at the elevation position by using a fastener.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a pre-buried positioner of bridge suspension cable anchor cylinder which characterized in that: including setting up in anchor section of thick bamboo bottom form (1) of anchor section of thick bamboo (2) design position bottom, steel sheet (3) are laminated mutually with anchor section of thick bamboo bottom form (1) at the bottom of the anchor section of thick bamboo, downside along steel sheet (3) at the bottom of the anchor section of thick bamboo is provided with # angle steel (4), 1# angle steel (4) are fixed in on anchor section of thick bamboo bottom form (1), the bottom of anchor section of thick bamboo bottom form (1) is fixed with # angle steel (2) along leading to the length direction, and a plurality of support bars (6) fixed connection through distributing the setting between # angle steel (4) and # angle steel (5), the upper end of anchor section of thick bamboo (2) design position still is provided with anchor section of thick bamboo support (7), anchor section of thick bamboo support (7) are including being used for setting up horizontal pole (71) of anchor section of thick bamboo (2) upper end, horizontal pole (71) are height-adjustable structure.
2. The pre-buried positioner of bridge suspension cable anchor section of thick bamboo of claim 1, its characterized in that: the anchor cylinder bottom steel plate is characterized in that 3# angle steel (8) and 4# angle steel (9) are respectively arranged on two sides and the upper side of the anchor cylinder bottom steel plate (3), and four side faces of the anchor cylinder bottom steel plate (3) are fixedly connected with an anchor cylinder bottom template (1) through 1# angle steel (4), 3# angle steel (8) and 4# angle steel (9) respectively.
3. The pre-buried positioner of bridge suspension cable anchor section of thick bamboo of claim 1, its characterized in that: the anchor cylinder support (7) further comprises two vertical rods (72) and an inclined rod (73), the two vertical rods (72) are respectively arranged at two ends of the horizontal rod (71), two ends of the horizontal rod (71) are fixedly connected with the vertical rods (72) at two ends through fasteners, and the inclined rod (73) is obliquely arranged and the upper end of the inclined rod is fixed in the middle of the horizontal rod (71).
4. The construction method of the pre-buried positioning device for the anchor cylinder of the stay cable of the bridge in claim 1 is characterized by comprising the following specific operations:
(1) measuring line
According to the pre-buried precision requirement of the anchor cylinder (2), adopting a total station three-dimensional coordinate method to discharge the central line and the central point of the anchor point under the stay cable on the bottom template (1) of the anchor cylinder, dividing the peripheral lines of the bottom steel plate (3) of the anchor cylinder according to the measuring central point and marking the peripheral lines, and measuring the central point position of the anchor cylinder (2) on the thin steel plate welded at the top pipe orifice of the anchor cylinder (2);
(2) device mounting and positioning
1) Installing angle steel at the bottom of the anchor cylinder:
firstly, attaching No. 1 angle steel (4) to the bottom side line of the anchor cylinder bottom steel plate (3) in a clinging manner, and pre-fixing the angle steel;
secondly, 2# angle steel (5) is tightly attached to the bottom of the anchor cylinder bottom template (1) in a through-length mode;
thirdly, supporting steel bars (6) are arranged between the 1# angle steel (4) and the 2# angle steel (5), and two ends of each supporting steel bar (6) are firmly welded with the 1# angle steel (4) and the 2# angle steel (5) respectively;
2) erecting an anchor cylinder support:
firstly, an anchor cylinder bracket is erected by adopting a common steel pipe and consists of two vertical rods (72), a horizontal rod (71) and an inclined rod (73), and the rods are connected by adopting a fastener;
secondly, the positions of the vertical rods (72) are determined according to actual field conditions, two vertical rods (72) are firstly erected, then the horizontal rods (71) are erected, and finally the inclined rods (73) are erected, wherein the horizontal rods (71) are required to be exposed out of the top surface of the box girder structure by more than 10 cm;
(3) hoisting and positioning and reinforcing of anchor cylinder
1) Anchor cylinder hoisting in place
Firstly, hoisting the bottom of an anchor cylinder (2) to the upper side of a No. 1 angle steel (4) by using hoisting equipment, and placing the upper part of the anchor cylinder on a horizontal rod (71);
secondly, primarily adjusting the inclination angle of the anchor cylinder (2) to a designed position by utilizing the vertical height of the horizontal rod (71);
2) bottom reinforcement of anchor cylinder
After the anchor cylinder (2) is hoisted in place, 3# angle steel (8) is installed to reinforce two sides of the anchor cylinder bottom steel plate (3), and if a gap exists between the anchor cylinder bottom steel plate (3) and the anchor cylinder bottom template (1), the 3# angle steel (8) is arranged in a full-length mode and is additionally provided with 4# angle steel (9);
(4) anchor cylinder angle fine adjustment
After the bottom of the anchor cylinder (2) is firmly reinforced, the angle of the anchor cylinder is adjusted by adjusting the vertical height of the horizontal rod (71) again, the angle is finely adjusted according to field measuring and setting data, and after the angle is adjusted in place, the horizontal rod (71) is fixed on the vertical rod (72) at the elevation position by using a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063802.9A CN112095485A (en) | 2020-09-30 | 2020-09-30 | Bridge stay cable anchor cylinder pre-embedded positioning device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063802.9A CN112095485A (en) | 2020-09-30 | 2020-09-30 | Bridge stay cable anchor cylinder pre-embedded positioning device and using method thereof |
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| CN112095485A true CN112095485A (en) | 2020-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737661A (en) * | 2021-10-11 | 2021-12-03 | 中铁二局集团有限公司 | Construction method for steel-concrete combined section of tower base of cable-stayed bridge |
| CN114134810A (en) * | 2021-11-16 | 2022-03-04 | 中铁广州工程局集团有限公司 | Rapid positioning connection construction method for gravity anchor embedded steel pipe |
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| CN212477455U (en) * | 2020-09-30 | 2021-02-05 | 中铁二局第一工程有限公司 | Pre-buried positioner of bridge suspension cable anchor cylinder |
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2020
- 2020-09-30 CN CN202011063802.9A patent/CN112095485A/en active Pending
Patent Citations (6)
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| KR20090074133A (en) * | 2009-06-11 | 2009-07-06 | 진성토건 주식회사 | Cable tube mounting apparatus and method for main tower of cable-stayed girder bridge |
| CN203160133U (en) * | 2013-03-12 | 2013-08-28 | 中铁四局集团第二工程有限公司 | Three-dimensional combined accurate positioning device for stayed-cable bridge body cable duct |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737661A (en) * | 2021-10-11 | 2021-12-03 | 中铁二局集团有限公司 | Construction method for steel-concrete combined section of tower base of cable-stayed bridge |
| CN113737661B (en) * | 2021-10-11 | 2023-01-31 | 中铁二局集团有限公司 | Construction method for steel-concrete combined section of tower base of cable-stayed bridge |
| CN114134810A (en) * | 2021-11-16 | 2022-03-04 | 中铁广州工程局集团有限公司 | Rapid positioning connection construction method for gravity anchor embedded steel pipe |
| CN114134810B (en) * | 2021-11-16 | 2024-05-31 | 中铁广州工程局集团有限公司 | Quick positioning connection construction method for gravity anchor embedded steel pipe |
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